CN2155373Y - Combined hydraulic coke knocker - Google Patents
Combined hydraulic coke knocker Download PDFInfo
- Publication number
- CN2155373Y CN2155373Y CN93203897U CN93203897U CN2155373Y CN 2155373 Y CN2155373 Y CN 2155373Y CN 93203897 U CN93203897 U CN 93203897U CN 93203897 U CN93203897 U CN 93203897U CN 2155373 Y CN2155373 Y CN 2155373Y
- Authority
- CN
- China
- Prior art keywords
- nozzle
- coke
- plug
- decoking
- screw thread
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B33/00—Discharging devices; Coke guides
- C10B33/006—Decoking tools, e.g. hydraulic coke removing tools with boring or cutting nozzles
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Coke Industry (AREA)
Abstract
The utility model relates to a novel combined hydraulic coke knocker. A coke cutting nozzle uses a nozzle having a constant velocity changing flow passage structure or a nozzle having a streamline flow passage structure, flow coefficient and constant velocity core length are increased, energy loss is reduced, water stream impact force is enhanced, and coke cutting velocity is increased. An included angle between an inclined nozzle of a drill hole and a shaft line is reduced, and the velocity of drilling holes is increased. One side edge of the coke knocker is provided with a ribbed slab for scraping the hole walls and preventing the blocking of drilling the holes. A plug of the coke cutting nozzle uses an inner hidden plug structure in order to prevent the damage to the nozzle when the holes are drilled. The combined hydraulic coke knocker has the advantages of high decoking speed, electricity saving, water saving, simple structure, small size and light weight and can be used for decoking in a coke chamber of a coking delaying device in an oil refinery.
Description
The utility model relates to a kind of associating hydraulic removal coke device, is used for removing refinery coke from the coke drum of refinery delayed coking.
At present, refinery coke in the refinery delayed coking unit coke drum, all be to adopt the hydraulic removal coke device decoking, decoking process is divided into boring, switches, cuts burnt three operations, general decoking device is the associating hydraulic removal coke device, boring nozzle and Qie Jiao nozzle are promptly arranged, and cutting burnt nozzle usually is 13 ° of cone angle garden awl surface of revolution flow passage structures, consults 1988 the 5th phases of magazine " refining of petroleum " the 42nd page of " design and the application of associating hydraulic removal coke device " literary composition.This kind nozzle orifice coefficient is little, and the potential core is long shorter, and power loss is big, makes that to cut the burnt time long, and efficient is low.The angle of oblique nozzle and decoking device axis of holing is generally 40 °-45 °, and angle is big, and penetration rate is slower, and lock of tool drilling or other mechanical accident easily take place sometimes, and operation reliability is low.
The purpose of this utility model provides a kind of associating hydraulic removal coke device, and it can improve water bundle surging force, reduces flow passage resistance force of waterproof, the augmented flow coefficient prolongs potential core's length, improves penetration rate, shorten and to cut the burnt time, reduce or avoid bit freezing and mechanical accident, raise the efficiency and operation reliability.
The purpose of this utility model is to implement like this:
(1), cut burnt nozzle (6) inner chamber and adopt the iso-variable velocity flow passage structure, the runner bus of this nozzle is a continuous curve, makes that the velocity variations along the nozzle axis direction was a constant when liquid flowed in nozzle.Cut burnt nozzle (6) inner chamber and also can adopt the streamline channel structure, the angle of liquid flow direction and nozzle axis positive dirction is a continuous variable, and its bus is to be changed by variable angle, presses
Form a curve of connecting orbit.Make the hydrofluidic spread angle little, orifice coefficient is big, and the potential core grows up.
(2), main cylinder (1) outside is connected and fixed gusset (2), when decoking device hole, gusset (2) was along with the decoking device rotation, the bit freezing phenomenon takes place when preventing boring or cutting Jiao in the scraping hole wall, protects decoking device to expose the parts of part simultaneously, with anticollision.
(3), the plug (9) of cutting burnt nozzle (6) usefulness adopts internal hidden type structure, the internal thread of the outside screw of plug (9) and screw thread cover (8) links, and is built in the screw thread cover (8), during the decoking device drilling operation, plug (9) does not collide with hole wall, avoids plug to become flexible and comes off.
(4), the angle of hole oblique nozzle (11) and decoking device axis is 25 °-35 ° and is preferably 30 °, reduce angle and can improve penetration rate.
The utility model is because to cut burnt nozzle screwdriver shape nozzle be iso-variable velocity flow passage structure nozzle or streamline channel structure nozzle, and hydraulic performance is good, and orifice coefficient and potential core are long all to increase, and has improved surging force, and it is fast to cut burnt speed.The angle of oblique nozzle and decoking device axis of holing dwindles, and has improved penetration rate, though boring aperture reduces, owing on the decoking device gusset is housed, scraping hole wall during boring can be avoided lock of tool drilling.Cut burnt nozzle in addition and adopt internal hidden type structure with plug, become flexible because of collision when having avoided boring, mechanical accident such as come off has improved operation reliability, and the decoking time also obviously shortens.
The utility model accompanying drawing is as follows:
Fig. 1, decoking device structural representation
Fig. 2, iso-variable velocity flow passage structure nozzle inner chamber synoptic diagram
Fig. 3, streamline channel structure nozzle inner chamber synoptic diagram
Among the figure: (1) main cylinder; (2) gusset; (3) bend pipe; (4) barretter; (5) nozzle head; (6) cut burnt nozzle; (7) sealing-ring; (8) screw thread cover; (9) plug; (10) boring nozzle; (11) the oblique nozzle of holing; (12) blind nut.
Further specify the utility model below with reference to the accompanying drawings:
As shown in Figure 1, the main cylinder of hydraulic removal coke device (1) side connects barretter (4), nozzle head (5) successively through bend pipe (3), to cut burnt nozzle (6) with screw thread cover (8) and sealing-ring (7) is fixed in the nozzle head (5), plug is loaded in the screw thread cover (8), block the spout of cutting burnt nozzle during boring, the blind nut of dismantling, the plug of dismantling when cutting Jiao is loaded onto blind nut simultaneously.Each decoking device can be pacified and be cut burnt nozzle more than two or two, and its relative position must be symmetrical, and this example has been installed two and cut burnt nozzle.As shown in Figure 2, cut the nozzle that burnt nozzle (6) has adopted the iso-variable velocity flow passage structure, the runner bus of its nozzle makes that the velocity variations along the nozzle axis direction was a constant when liquid flowed in nozzle, and the outlet of this nozzle still has one section straight garden shell of column (H
0=0.5d
0) its runner bus equation formula is according to iso-variable velocity dv/dy=C(constant) (1)
And know: V=(Q)/(π X) (2)
dv／dy＝ (Q)/(π) d（X
－2）／dy＝C （3）
This formula can be write as (d (X
-2))/(dy)=C ' (wherein C '=(π C)/(Q)) (4)
Variables separation gets d(X
-2)=C ' dy (5)
The two ends integration gets X
-2=C
1Y+C
2(6)
Can obtain C according to X and y and final condition
1Y and C
2, y=0 when X=1/2D
Substitution (6) formula gets C
2=4/ (D
2) (7)
When X=1/2do, in y=H-Ho substitution (6) formula
C
1＝ 1/(H-Ho) （ 4/(do) － 4/(D
2) ） （8）
With C
1, C
2In substitution (6) formula:
X
－2＝ 1/(H－Ho) （ 4/(do) － 4/(D
2) ）y＋ 4/(D
2)
Promptly
(9) formula is the runner bus equation formula of iso-variable velocity type nozzle
X and y coordinate are as shown in Figure 2
The utility model example is got D=29mm, do=14mm H=59mm Ho=0.5do=7mm
With runner bus equation formula that can iso-variable velocity type nozzle in above-mentioned numerical value substitution (9) formula is X
2=10192/ (3y+52) (10)
The corresponding data that calculates concrete X and y according to this can be linked to be the continuous curve of the runner bus of this nozzle.
As shown in Figure 3, cut burnt nozzle (6) and also can adopt streamline channel structure nozzle, the runner bus track of its nozzle is that the angle with the flow direction of liquid and nozzle axis positive dirction is a parameter, a continuous curve of trying to achieve by following equation (11).
The angle of β in the formula---liquid flow direction and X positive dirction, the coefficient that substitution is got by experiment can get following curvilinear equation:
H is the nozzle flow channel length in the formula, and D and do are respectively the entrance and exit diameter of nozzle, and true origin makes it to be symmetrical in up and down initial point at mid point of curve.The upper semisection of curve (being the preceding half of runner) is got "+" number in formula (12), the lower semisection of curve is got "-" number in formula (12), must determine D earlier during the design nozzle, do and H, get β=0～85 ° continuous X of calculating and y value then, can be linked to be curve, by formula used system of coordinates Xoy(is as shown in Figure 3 among the β) though the runner bus that can draw, but it is cumbersome, as processing by this system of coordinates, then difficulty is more, will be during because of mechanical workout from the inlet end (D end) of nozzle, be convenient processing, the XOy system of coordinates of coordinate description from figure of runner bus should be converted to the X ' O ' y ' system of coordinates among the figure, the transformational relation of new and old system of coordinates is
Design example: D, do, the H value of getting nozzle are respectively 0-28mm
Press β=0～35 ° continuous value, the system of coordinates conversion by (14) formula is calculated X, y, process (13) formula obtains X ' y '.
Three kinds of nozzle hydraulic performance contrasts see Table 1
| The nozzle type | This coefficient of discharge C | Spread angle of jet α | The potential core is long |
| Tapered 13 ° | 0.94-0.963 | 8° | 4.8do |
| The iso-variable velocity type | 0.98 | 8° | 5.9do |
| Streamlined | 0.972 | 8° | 5.9do |
As shown in Figure 1; blind nut (12) degree of being of cutting the screw thread cover (8) burnt nozzle (6) outside and the nozzle (11) of holing with protection bend pipe (3) at its length of gusset (2) and the width of 4 correspondences of arranged outside (welding) of main cylinder (1); make it in decoking process, to avoid to collide with coke; in addition when boring; gusset (12) rotates with decoking device; but the scraping hole wall prevents lock of tool drilling.
Screw thread cover (8) one ends are processed into outside screw are connected in nozzle head (5); the other end is processed into internal thread, and the outside screw of plug (9) screws in screw thread cover (8), and plug (9) is subjected to the protection of screw thread cover; when boring, the coke button so that the shake pine that can not collide on the hole wall come off.
The angle of oblique nozzle (11) and decoking device axis of holing is 30 °, dwindles angle penetration rate is accelerated, and boring aperture is corresponding to diminish, because the utility model has adopted reinforcing plate structure, so can avoid the bit freezing phenomenon to take place.
The utility model has carried out industrial performance test on delayed coking unit, effect is fine.Penetration rate be the 1-1.2 meter/minute with former decoking device mutually specific rate be enhanced about more than once, 45 times on probation lock of tool drilling does not take place, smooth operation is reliable, this apparatus structure is simple, and volume is little, and is in light weight, water-saving, power saving, decoking speed is fast, and decoking efficient is average 0.26 minute/ton Jiao.
Claims (3)
1, a kind of associating hydraulic removal coke device, it comprises main cylinder (1), its side is through bend pipe (3) be connected successively barretter (4), nozzle head (5), to cut burnt nozzle (6) with screw thread cover (8) and sealing-ring (7) is fixed in the nozzle head (5), connect boring nozzle (10) and boring oblique nozzle (11) in the bottom of main cylinder (1), it is characterized in that:
(1) cuts burnt nozzle (6) inner chamber and adopt the iso-variable velocity flow passage structure, the runner bus of this nozzle is a continuous curve, makes that the velocity variations along the nozzle axis direction was a constant when liquid flowed in nozzle, can make the hydrofluidic spread angle little, the potential core grows up, and orifice coefficient is big;
(2) main cylinder (1) outside is connected and fixed gusset (2), and when decoking device was holed, gusset (2) was along with the decoking device rotation, and the bit freezing phenomenon takes place when preventing boring or cutting Jiao the scraping hole wall.Protect decoking device to expose parts partly simultaneously, with anticollision;
(3) plug (9) of cutting burnt nozzle (6) usefulness adopts internal hidden type structure, the male thread of plug (9) connects with the interior screw thread of screw thread cover (8), and is built in the screw thread cover (8), and decoking device is when drilling operation, plug (9) does not collide with hole wall, prevents that plug from taking place to become flexible or come off;
2, a kind of associating hydraulic removal coke device, it comprises main cylinder (1), its side is through bend pipe (3) be connected successively barretter (4), nozzle head (5), to cut burnt nozzle (6) with screw thread cover (8) and sealing-ring (7) is fixed in the nozzle head (5), connect boring nozzle (10) and boring oblique nozzle (11) in the bottom of main cylinder (1), it is characterized in that cutting burnt nozzle (6) inner chamber and adopt the streamline channel structure, the angle of liquid flow direction and nozzle axis positive dirction is a continuous variable, its bus is to be changed by variable angle, presses
Form a curve that links track, can make the hydrofluidic spread angle little, the potential core grows up, and orifice coefficient is big;
3, decoking device according to claim 1 and 2, the angle of it is characterized in that holing oblique nozzle (11) and decoking device axis is 25 °-35 °, reduces angle and can improve penetration rate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93203897U CN2155373Y (en) | 1993-02-11 | 1993-02-11 | Combined hydraulic coke knocker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93203897U CN2155373Y (en) | 1993-02-11 | 1993-02-11 | Combined hydraulic coke knocker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2155373Y true CN2155373Y (en) | 1994-02-09 |
Family
ID=33787622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93203897U Expired - Lifetime CN2155373Y (en) | 1993-02-11 | 1993-02-11 | Combined hydraulic coke knocker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2155373Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102459512A (en) * | 2009-05-04 | 2012-05-16 | 福斯管理公司 | Remotely-operated mode shifting apparatus for a combination fluid jet decoking tool, and a tool incorporating same |
| CN102566486A (en) * | 2012-01-17 | 2012-07-11 | 中国石油天然气股份有限公司 | Remote intelligent decoking program control device |
| CN103540327A (en) * | 2012-11-22 | 2014-01-29 | 襄阳航生石化环保设备有限公司 | Automatic rotation type coke cutter |
-
1993
- 1993-02-11 CN CN93203897U patent/CN2155373Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102459512A (en) * | 2009-05-04 | 2012-05-16 | 福斯管理公司 | Remotely-operated mode shifting apparatus for a combination fluid jet decoking tool, and a tool incorporating same |
| CN102459512B (en) * | 2009-05-04 | 2015-01-14 | 福斯管理公司 | Remotely-operated mode shifting apparatus for a combination fluid jet decoking tool, and a tool incorporating same |
| CN102566486A (en) * | 2012-01-17 | 2012-07-11 | 中国石油天然气股份有限公司 | Remote intelligent decoking program control device |
| CN102566486B (en) * | 2012-01-17 | 2014-04-02 | 中国石油天然气股份有限公司 | Remote intelligent decoking program control device |
| CN103540327A (en) * | 2012-11-22 | 2014-01-29 | 襄阳航生石化环保设备有限公司 | Automatic rotation type coke cutter |
| CN103540327B (en) * | 2012-11-22 | 2014-09-17 | 襄阳航生石化环保设备有限公司 | Automatic rotation type coke cutter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |